I want to know what size injectors I should get for my new setup. Im building and dropping an lt1 in my 88 iroc, it's a distributor lt1 from a 97 silverado. I'm doing headers, exhaust, flat top pistons, porting and polishing heads and intake, and ram air. I will also be using a comp cam, the specs I will include in a picture, any input is greatly appreciated! Thanks!

 

Stock LT1 (24 lb/hr) injectors would be good enough for 350 rwhp, probably the most you will make with decent heads and that cam.
SVO 30 lb/hr are good to about 450 rwhp and even more for short term WOT operation.

 

By "97 LT1" do you mean one of the L31 Vortec 350s? They're two very different things that will make a difference when you choose your cam.

 

The LT1 didn't come in 97 Silverados. (or any other year)

The LT1 doesn't have a distributor. It has "OptiSpark", which is similar functionally to a distributor except it's driven by the cam and is between the timing cover and the water pump.

If you have a 97 Silvy motor, it's probably a L31. The intake on it requires the use of CPFI; kind of a crap induction system for any kind of performance. Doesn't use "injectors", it uses a "spider" instead. You'll need some other intake.

Injector size is determined by max fuel requirements at max RPM and max power. As said, 24 lb/hr is usually about all you'll ever need for a N/A 350.

Instead of taking pictures of cam specs, just tell us what the part # is.

 

Dang, everybody jumping to the conclusion that he doesn't even know what kind of engine he has? Am I giving him too much benefit of the doubt?
LT1's converted to conventional distributors aren't so uncommon. The modified LT1 residing at one point in a 97 Silverado could be just a non-relevant piece of information.
OP, straighten us out here!

 

No, don't know the number, I have a chem test today and a engineering graphics presentation tomorrow so I haven't looked haha, but I've got the 906 vortec heads, and I'm getting an ss/z28 intake and throttle body, I bought the motor as a used long block. I'm just using stock replacement federal mogul pistons. But it's a 2 bolt main 97 350, I have a pair of swap meet vortec heads haha, I believe the 906 are the 1.94 heads, and I have the 19lb stock injectors from my lb9, but I need new ones I'm assuming and just wanted to know what size y'all thought. Fell to 10.94 head gasket raises me to 10.8:1 I believe plus porting and polishing the heads and intake, as well as headers, exhaust, ram air, and so on.

 

They are flat top pistons, dunno if I said that

 

Well, you guys saw the picture correctly I DID give too much benefit of the doubt.
OP: stop. don't buy any parts. don't touch a thing. just read for a while.
If you're talking an LT1 intake/TB, no that won't work with Vortec heads.

 

Even the stock vortec heads off a lt1? They are supposed to be from an lt1

 

Vortec (L31) heads and LT1 block or intake are not compatible.
L31 engine is conventionally cooled, same as all Gen1 SBC's. LT1 is reverse cooled; the block and head water passages are different, and neither is compatible with Gen1 stuff. LT1 intake manifold has no water passages; Gen1/L31 intakes do.
Forget anything LT1 unless you're starting with an LT1.

 

Sonofabitch, that long block was a gift, I haven't even looked at it close enough I didn't even notice

 

It's an 880 block, came with 906 vortec heads, so it will work! Hahaha I was shitting myself thinking I wasted al that money!

 

Stock LT1 injectors are 24lb. What kind of horsepower are you planning to run?

 

880 IS NOT a LT1 block.

It's a traditional SBC (Gen 1 if you will) with 1-pc rear main seal.

Leave "LT1" out of all this, it doesn't apply, just muddies the waters unnecessarily.

906 = Vortec (L31) (truck) heads. Likely the stock heads out of the 97 Silvy.

1.94" is pure raw unadulterated BS. That's the stock 350 valve size. Doesn't describe THE HEADS at all. Leave that out.

Sounds like what you've got is a stock 97 L31 long block. Pretty straightforward.

The "SS/Z28" stuff is another bunch more of pure raw unvarnished BS. Could be just about anything. Who knows, if it comes with the deal, maybe you can sell it and use Sofa's Patented Easy 2-Step Transmutation Method that I learned at Hogwart's; turns ANYTHING you DON'T want, into (at least part of) ANYTHING ELSE you DO want.

(1) Sell the thing you don't want or can't use or have too much of or whatever

(2) Use the cash to buy the thing you DO want

FM!!!!

You're still going to need an intake; nothing you have talked about that you might have now, or that might "come with" any of the other crap you've talked about, will work, for what you're trying to do. Even if any of it is for real.

 

906 casting number heads are vortec heads sir, I just went and checked and they will work with my block, water channels are all correct. Vortec heads should fit the intake from a SS or Z28 (which I don't have but will get if it fits), I'm going to try to get a 58 mm throttle body. With 10.7:1, the heavy cam I'm using, porting and polishing everything, headers, exhaust, ram air, I believe I can get the 350 hp at the ground I want (I believe I can). As far as "if any of this is for real" I can put a picture of my ***** on that block in front my Camaro if you want and you can tell me if it's real. If you don't want to show any respect don't answer my post. I don't know near as much as I should and am leaning on my dad a lot as this is my first big project. And btw, after I was corrected I didn't call it an LT1 anymore, so just swallow that part next time you wanna say it. So if you wanna be a dick, then gtfo

 

Good luck with that!!! Hope it works out well for you.